Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20120715T190024 ssmi15 112.3 13.7% 3.1 -3.1 n/a   25.4 kts
20120715T203916 ssmis17 223.5 24.7% 4.0 -4.0 n/a   27.1 kts
20120715T204256 ssmis16 201.2 37.0% 4.4 -4.4 n/a   27.1 kts
20120715T232220 ssmis18 245.7 NaN% NaN NaN n/a   29.8 kts
20120715T232233 ssmis18 245.7 NaN% NaN NaN n/a   29.8 kts
20120716T035751 tmi 45.6 34.2% 4.8 -4.8 n/a   30.0 kts
20120716T061552 ssmi15 134.5 8.2% 3.1 -3.1 n/a   30.0 kts
20120716T073800 ssmis17 223.5 1.4% 0.9 -0.9 n/a   30.9 kts
20120716T081205 ssmis16 67.8 0.0% 1.2 -1.2 n/a   31.5 kts
20120716T102532 ssmis18 45.6 6.8% 0.0 -0.0 n/a   34.1 kts
20120716T102917 tmi 5.0 93.2% 0.0 -15.0 n/a   34.2 kts
20120716T203234 ssmis17 190.1 NaN% NaN NaN n/a   36.2 kts
20120716T204209 ssmis16 -919.0 -999.0% -999.0 -909.0 n/a   36.4 kts
20120716T231006 ssmis18 234.6 NaN% NaN NaN n/a   39.1 kts
20120717T043717 tmi 156.8 39.7% 3.0 -3.0 n/a   48.9 kts
20120717T220721 ssmis17 12.2 0.0% 2.1 -2.1 n/a   50.0 kts
20120718T003804 ssmis18 201.2 NaN% NaN NaN n/a   50.0 kts
20120718T052022 tmi 5.0 0.0% 0.0 -0.0 n/a   50.0 kts
20120718T065832 tmi 23.4 17.8% 4.5 -4.5 n/a   49.8 kts
20120718T072802 ssmi15 23.4 20.6% 3.5 -3.5 n/a   49.5 kts
20120718T083653 tmi 23.4 0.0% 8.5 -8.5 n/a   48.5 kts
20120718T085405 ssmis17 23.4 0.0% 4.6 -4.6 n/a   48.2 kts
20120718T115925 ssmis18 -919.0 -999.0% -999.0 -909.0 n/a   45.0 kts
20120718T195128 ssmi15 112.3 0.0% 4.2 -4.2 n/a   35.5 kts
20120718T215229 ssmis17 323.5 NaN% NaN NaN n/a   28.7 kts
20120718T215445 ssmis16 323.5 NaN% NaN NaN n/a   28.6 kts
20120719T002350 ssmis18 323.5 NaN% NaN NaN n/a   25.0 kts
20120719T060356 tmi 212.4 NaN% NaN NaN n/a   24.0 kts
20120719T071404 ssmi15 56.7 0.0% 4.4 -4.4 n/a   23.2 kts
20120719T090303 ssmis16 5.0 0.0% 3.3 -3.3 n/a   21.9 kts
20120719T091649 ssmis17 190.1 NaN% NaN NaN n/a   21.7 kts
20120719T193456 ssmi15 45.6 0.0% 1.1 -1.1 n/a   16.6 kts
20120719T213825 ssmis17 167.9 NaN% NaN NaN n/a   15.8 kts
20120719T214051 ssmis16 156.8 NaN% NaN NaN n/a   15.8 kts
20120720T001038 ssmis18 90.1 0.0% 0.2 -0.2 n/a   15.0 kts

Key:

Diameter values indicate the estimated surface eyewall diameter (the MI eyewall edge diameter minus 10 km).

Diameter values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

"Ring %" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.

"Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

Scores are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <50 kts in order to rule out weak but highly symmetric TCs.